“I want my guests to invest in their appearances, feel pretty, go buy the dress of their dreams and feel confident in themselves.

“I want everyone to feel and look beautiful.”

Ashely has suggested that all her bridesmaids get fit, as well as use hair extensions.

Even one bridesmaid who just gave birth could stand to drop a few kilos, laughs Ashely, who’s lost 15kg (2st 5lb) so far in her race to the altar.

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Sue recently led a bridal group, pictured, through two hours of exercises to help them get wedding-fit

Even at her hen party, bridesmaids were forbidden to wear swimsuits with straps, lest they have unsightly tan lines for the wedding.

Norman Rowe, a plastic surgeon in New York, says: “It’s the bride’s day, and she wants not only the day to be perfect, the weather to be perfect, the dress to be perfect — she wants her bridal party to be perfect because it’s a reflection of her.”

He says he’s been surprised to see an increasing number of brides come in with their maids of honour, and even entire bridal parties, to get filler or Botox.

Sheena and Ashley have both scheduled a Botox treatment with Norman a week before Ashley’s July wedding.

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As well as the bootcamp, pictured, Rachel's hen weekend also included organic smoothies and a healthy brunch

The bride is also encouraging another bridesmaid to have her earlobe cosmetically fixed to wear the chandelier earrings she’s picked out for the entire wedding party.

She added: “I can’t have her in studs.”

Bride-to-be Whitney Tingle, 31-year-old co-founder of meal-delivery company Sakara Life, is encouraging her bridal party to lose weight before her June wedding in Tel Aviv by purchasing Sakara Life’s dietetic, “clean eating” meal plans.

The company’s five-day meal plan starts at £316 — though Whitney is offering them 15 per cent off vouchers.

Whitney says: “They’re going to be standing up there with me, so they want to look good and feel good too.”

As her wedding draws nearer, Whitney and her bridesmaids will all be dieting with Sakara — a favourite among Victoria’s Secret Angels — and exercising together.

Her bridesmaids willingly signed up for the diet, she says, which they’ll use in the weeks before the wedding.

Whitney is also coordinating group yoga sessions and organising an outdoor dance party to make the workouts fun.

She added: “The day after the wedding we’re doing a beach day and then going to the Dead Sea.

“We’re going to be in swimsuits, so they’re all motivated.”

Boutique gyms are catching on to the trend, with New York studios including Y7 Studio, Pure Barre, Physique 57, SoulCycle and others hyping private sessions for hen parties.

Bridesmaid Ashley Lagas, 29, says signing up for the gruelling workout was a mutual decision between herself and bride-to-be Rachel Lenhoff — one that definitely left them feeling sore for days after.

Ashely says: “We based our weekend around the boot camp, but we also ended up doing yoga by the water the next day.

“We just wanted to be really active the whole weekend.”

But the added burden of satisfying such high expectations can be too much for some.

Maid of honour Mandy, a 28-year-old medical biller from Texas — who declined to give her last name to avoid family fallout — says her sister has demanded she get a spray tan before her wedding, grow her hair out, and avoid dying it anything other than blonde.

Sarcastically, she said: “I’m pretty sure if I weren’t already attempting to get in shape, she’d probably make comments about that too.

“I guess she wants everyone to look picture-perfect, otherwise they might distract from her looking fabulous.”